(under subclass 384) Subject matter including means for sequentially moving a light beam across the article, or for periodically interrupting a light beam directed toward the article.
SEE OR SEARCH CLASS
250, Radiant Energy,
229+, for photocells with light control members of the light interrupting type.
358, Facsimile,
199+, and 474+ for optical scanning systems including flying spot scanners of the cathode-ray type.
359, Optics: Systems (Including Communication) and Elements, 227+, for light control by opaque members movable in the light path.
